docs: fiddle slightly with spacing

Author: Benjamin Coe

index.html

@@ -89,13 +89,13 @@ <h1 class="pink-highlight">Yargs be a node.js library fer hearties tryin' ter pa
 
         <pre>
           <code class="hljs language-bash">
-            example.js &lt;cmd&gt; [args]
+  example.js &lt;cmd&gt; [args]
 
-            Commands:
-              hello [name]  welcome ter yargs!
+  Commands:
+    hello [name]  welcome ter yargs!
 
-            Options:
-              --help  Show help                                                    [boolean]
+  Options:
+    --help  Show help                                                    [boolean]
           </code>
         </pre>